MGN 546 (M) In Water Surveys

This Note provides guidance on the conduct of the inspection of the outside of the ships bottom in the water (In-Water Survey or IWS) in accordance with Merchant Shipping Notice (MSN) 1751, as amended. It specifies which ships may be eligible and the intervals between surveys. It details the preparations required prior to embarking on IWS and the procedures to follow before, during and after the IWS.